/*
* comm_setselect
*
* This is a needed exported function which will be called to register
* and deregister interest in a pending IO state for a given FD.
*/
void
comm_setselect(int fd, fdlist_t list, unsigned int type, PF * handler,
void *client_data, time_t timeout)
{
fde_t *F = &fd_table[fd];
assert(fd >= 0);
assert(F->flags.open);
/* Update the list, even though we're not using it .. */
F->list = list;
if (type & COMM_SELECT_READ)
{
kq_update_events(fd, EVFILT_READ, handler);
F->read_handler = handler;
F->read_data = client_data;
}
if (type & COMM_SELECT_WRITE)
{
kq_update_events(fd, EVFILT_WRITE, handler);
F->write_handler = handler;
F->write_data = client_data;
}
if (timeout)
F->timeout = CurrentTime + (timeout / 1000);
}
/*
* rb_setselect
*
* This is a needed exported function which will be called to register
* and deregister interest in a pending IO state for a given FD.
*/
void
rb_setselect_kqueue(rb_fde_t *F, unsigned int type, PF * handler, void *client_data)
{
lrb_assert(IsFDOpen(F));
if(type & RB_SELECT_READ)
{
kq_update_events(F, EVFILT_READ, handler);
F->read_handler = handler;
F->read_data = client_data;
}
if(type & RB_SELECT_WRITE)
{
kq_update_events(F, EVFILT_WRITE, handler);
F->write_handler = handler;
F->write_data = client_data;
}
}
/*
* comm_setselect
*
* This is a needed exported function which will be called to register
* and deregister interest in a pending IO state for a given FD.
*/
void
comm_setselect(fde_t *F, unsigned int type, void (*handler)(fde_t *, void *),
void *client_data, time_t timeout)
{
int new_events, diff;
if ((type & COMM_SELECT_READ))
{
F->read_handler = handler;
F->read_data = client_data;
}
if ((type & COMM_SELECT_WRITE))
{
F->write_handler = handler;
F->write_data = client_data;
}
new_events = (F->read_handler ? COMM_SELECT_READ : 0) |
(F->write_handler ? COMM_SELECT_WRITE : 0);
if (timeout != 0)
{
F->timeout = CurrentTime + (timeout / 1000);
F->timeout_handler = handler;
F->timeout_data = client_data;
}
diff = new_events ^ F->evcache;
if ((diff & COMM_SELECT_READ))
kq_update_events(F->fd, EVFILT_READ,
(new_events & COMM_SELECT_READ) ? EV_ADD : EV_DELETE);
if ((diff & COMM_SELECT_WRITE))
kq_update_events(F->fd, EVFILT_WRITE,
(new_events & COMM_SELECT_WRITE) ? EV_ADD : EV_DELETE);
F->evcache = new_events;
}
/*
* Write a single update to the kqueue list.
*/
static void
kq_update_events(int fd, int filter, int what)
{
const struct timespec zero_timespec = { .tv_sec = 0, .tv_nsec = 0 };
struct kevent *kep = kq_fdlist + kqoff;
EV_SET(kep, (uintptr_t) fd, (short) filter, what, 0, 0, NULL);
if (++kqoff == KE_LENGTH)
{
int i;
for (i = 0; i < kqoff; ++i)
kevent(kqfd.fd, &kq_fdlist[i], 1, NULL, 0, &zero_timespec);
kqoff = 0;
}
}
/*
* comm_setselect
*
* This is a needed exported function which will be called to register
* and deregister interest in a pending IO state for a given FD.
*/
void
comm_setselect(fde_t *F, unsigned int type, void (*handler)(fde_t *, void *),
void *client_data, uintmax_t timeout)
{
int new_events, diff;
if ((type & COMM_SELECT_READ))
{
F->read_handler = handler;
F->read_data = client_data;
}
if ((type & COMM_SELECT_WRITE))
{
F->write_handler = handler;
F->write_data = client_data;
}
new_events = (F->read_handler ? COMM_SELECT_READ : 0) |
(F->write_handler ? COMM_SELECT_WRITE : 0);
if (timeout != 0)
{
F->timeout = CurrentTime + (timeout / 1000);
F->timeout_handler = handler;
F->timeout_data = client_data;
}
diff = new_events ^ F->evcache;
if ((diff & COMM_SELECT_READ))
kq_update_events(F->fd, EVFILT_READ,
(new_events & COMM_SELECT_READ) ? EV_ADD : EV_DELETE);
if ((diff & COMM_SELECT_WRITE))
kq_update_events(F->fd, EVFILT_WRITE,
(new_events & COMM_SELECT_WRITE) ? EV_ADD : EV_DELETE);
F->evcache = new_events;
}
